Divisible leg type desk

ABSTRACT

Each leg of a desk includes a long rodlike pipe made of iron sheet to the upper end of which a crossing member is welded at its front portion. The leg is screwed at a rear portion of said crossing member to each corner of a frame mounted on the back of a top board of the desk. A stack drawer on one side of the desk or stack drawers on two sides are mounted on the desk between the frame and the leg.

United States Patent 1111 3,600,050

[72] Inventor KokichiKunishima [56] References Cited 08914841811811UNITED STATES PATENTS P 860305 2,854,309 9/1958 Levine 312/194x 221 ElmSept.23,1969

3,418,030 12/1968 Golden 312/194 Paemed 3434768 3/1969 Schre er 312/1941731 Assignee Kabushikikabhalthoki Kosakusho y Osaka, Japan PrimaryExaminer-Patrick D. Lawson {32] Priority Dec. 26, 1968 Attorney-Browdyand'Neimark [33] Japan ABSTRACT: Each leg of a desk includes a longrodlike pipe [54] INVISIBLE LEG TYPE DESK made of iron sheet to theupper end of which a crossing 9 Chhnss Drawing Figs member is welded atits front portion. The leg is screwed at a [52] US. Cl 312/194 rearportion of said crossing member to each comer of a frame [5l Int. Cl v.A47b 17/00 mounted on the back of a top board of the desk. A stack [50]Field of Search 312/194, drawer on one side of the desk or stack drawerson two sides 21, 107, 239, 314 are mounted on the desk between the frameandthe leg.

DIVISIBLE LEG TYPE DESK This invention relates to a divisible leg typedesk in which firm structure of supporting leg is attained withoutproviding any connecting rod between each leg on the front, rear, rightand left sides of the desk, thereby enabling mass production of such adesk for simplified manufacture and obtaining good design, andespecially in which, each supporting leg constructed in a divisible typeform is mounted on a frame within the top board and fixing means forstack drawers at one side or both sides of the desk is also provided onthe frame under the top board, thereby greatly simplifying the exteriordesign than that heretofore in use. According to this invention, areduction of basic materials for stack drawers is attained and a welldesigned and strong desk with one or two sides of stack drawers can beprovided through a simplified manufacturing process.

One embodiment of this invention will be explained with reference to theaccompanying drawings in which:

FIG. 1 is a perspective view illustrating a mounting structure of aconventional stack drawer;

FIGS. 2 through are concerned with this invention, in which FIG. 2 is aperspective view of a desk the stack drawers of which are mounted on theframe of a top board of the desk, FIG. 3 is a perspective viewillustrating a state of mounting of the divisible legs, FIG. 4 is a planview of the same and FIG. 5 is a sectional side view of the divisiblelegs.

FIG. 1 shows a mounting structure of stack drawers 2 of a desk with afixing frame C provided according to a conventional mounting manner indesks with a top board 1 on divisible-type supporting legs 3.

Contrary to this, the structures as shown in FIGS. 2 through 5 arecommon in a basic structure according to this invention and they are ofa specially luxurious and well designed type, that is a type of desk inwhich each leg and a stack or stacks 2 are mounted on a frame under thetop board 1.

In the present invention, a stack drawer or drawers can be mounted veryeasily by this structure and manner of fixing of the divisible-type legson the top board 1 as explained with reference to FIGS. 3 to 5. That is,the present invention is characterized in that a long rodlike pipe madeof iron sheet is used as leg rod of the desk, and the inner periphery ofa front crossing portion of a crossing member, which is provided at arear crossing portion thereof with tapped holes for mounting, isintegrally welded to theupper end surface of said pipe, thus eachsupporting leg of the desk being mounted to a frame 11 at the cornerthereof, the frame which is provided on the back of the top board 1. Thedesk according to this invention is provided with a stack drawer ordrawers which make the desk complete for use.

Next, FIGS. 3 to 5 show one embodiment having a specially well designedstructure of a leg rod and other portions as well as basic features ofthis invention.

As shown in FIG. 5, the structure of each supporting leg B is such thata long rodlike inner pipe 4 square-shaped in section is inserted throughan outer pipe 3 squared-shaped in section and extends at the upperportionthereof beyond the outer pipe 3 to form a step portion 5, andsmall projection 6 provided on the upper and lower parts of the wallsurface of the inner pipe 4 which are used to press the inner pipe 4against the outer pipe 3.

Inserted and mounted at the lower end of the inner pipe 4 is an adjusterfixing means 7 for accurately adjusting the height As shown in FIGS. 3and 4, the divisible supporting legs B each having the sameconfiguration are screwed to' the top board 1 through the crossingmember 8. Explaining in detail, the legs are secured to the frame 11,which is mounted on the back of the top board 1, and in turn to the topboard 1 through the crossing member 8 welded to the leg by screwing themember 8 to the frame 11 with bolts 12 with the aid of the angle-shapedreinforcement 13 at each arm of the frame 11 extending from the crossingportion thereof. Reinforcement and good exterior configuration areobtained by aligning the outer end face 14 of the top surface 1 with theouter face of the supporting legs B and the front plate of the stackdrawers 2. The frame 11, which is mounted on the back of the top surface1, is provided at its proper position with reinforcement rods 15 ofangle shape. A spacer is disposed between the corner provided by theouter end surfaces 14 of the top board I 1 and the upper end portion ofthe inner pipe 4 of the leg B to of the supporting legs at the lower endof the outer pipe 3. The

inner periphery of a front crossing portion of a crossing member 8,which is provided with tapped holes 9, 9 at a rear crossing portion, iswelded to said step portion 5 to closely contact the supporting leg withsaid front crossing portion of the crossing member 8. On one edge ofsaid supporting leg B, there is provided at a lower predeterminedposition thereof a notch 10 for fitting a fixture (not shown) to supportboth stack drawers, shown in FIG. 2, at their lower parts.

reinforce each comer of the top board 1, and this reinforcement isattained and danger is avoided by forming an inwardly bent surface bybending further edge of the outer end face 14 of the top board 1.Assembly of this strong desk is accomplished by the fixing of each leg Bto the top board 1. As mentioned above, the frame 11 provided with theangle-shaped reinforcement rods 15 is mounted on the back of the topboard 1 and the notch 10 is formed at the lower predetermined positionon one edge of the supporting leg B. Accordingly, the stack drawer ordrawers 2 can be easily mounted by inserting the fixture (not shown)into said notch 10 and fixing the upper edge of the drawer or drawers 2to the frame 11 mounted under the top board 1 and the angle-shapedreinforcement rod 15.

According to the present invention, each supporting leg B constituting adesk is manufactured in advance in a divisible and identical form, theupper end portion of the inner pipe 4 of the leg is welded to the frontcrossing portion of the crossing member 8 whereby welding operation issimplified and the crossing member 8 is screwed to the frame 11 mountedon the top surface 1 through the angle-shaped reinforcement 13 at therear crossing portion of the member 8 whereby fixed moment of thesupporting leg B and the top board 1 increasing extremely. Such a largefixed moment is provided only by screw means in the assembly process,and therefore in fixing the supporting legs B to the top board 1, thereis advantages that the features coming from welding and screwing areused in full and well-designed desk is obtained as the upper end of thesupporting leg B is mounted very easily. This structure gives aneffective of firm mounting to the forces acting in any directions,because the legs and the frame mounted on the top board 1 are in a firmmounting relation coming from the integral structure of the frame 11 andthe crossing member 8 which is attained by the arrangement made betweenthe crossing member 8 and the angle-shaped reinforcement 13.

For the specially luxurious and well designed desk as shown in FIGS. theeffect as above mentioned is of course obtainable and the structure isvery strong due to mutual fitting between the inner and outer pipesconstituting the supporting leg B itself. In this way, the stack draweror drawers 2 can be mounted between the frame 11 under the top board 1and the supporting legs B firmly constructed without front, rear, rightand left connecting rods for each leg rod of the desk. There is nounshapely appearance such as appears in an outwardly exposed mannerbetween the top board and the stack drawer(s) in the conventional deskand there is also no need to provide a fixed frame. The upper fixingmeans for the stack drawers is provided on the inner side of the outerend face thereby providing very strong structure, and therefore thesimply designed desk with stack drawer or drawers will be inexpensivelyproduced in large quantities.

The structure in accordance with this invention will also be effectivein use for a frame structure of the file cabinet and the like,particularly in the application to the mounting portion between the legrod and the top board.

What I claim is:

l. A desk construction having a top and a plurality of legs dependingdownwardly therefrom, and wherein no connecting is necessary betweenlegs, comprising:

a frame member disposed beneath and supporting said top, said framebeing smaller in periphery than said top and having a corner adjacenteach leg;

a cross-shaped member at each corner of said frame defining a cross in ahorizontal plane, each said cross-shaped member defining four angleswhich are substantially right angles and which meet at a point alongsaid horizontal plane through said cross-shaped member, and each saidcorner of said frame fitting within one of the right angles of arespectively cross-shaped member and being securely attached thereto;and

each said leg fitting within a right angle of each said crossshapedmember diagonally across from each corner of said frame, each said legbeing securely attached to its respective cross-shaped member.

2. A desk construction in accordance with claim 1 further comprising aset of stack drawers mounted between saidframe and one of said legs.

3. A desk construction in accordance with claim 2 further comprising asecond set of stack drawers mounted between said frame and a second oneof said legs.

4. A desk construction in accordance with claim 1 wherein said frame issecurely attached to said cross-shaped members by means of screws; andsaid legs are securely attached to said cross-shaped members by welding.

5. A desk construction in accordance with claim 1 wherein said top andsaid frame are rectangular.

6. A desk construction in accordance with claim 1 further comprisingreinforcing angle irons disposed within each comer of said frame andattached thereto, so as to provide a triple thickness of angle iron,frame and cross-shaped member at each comer of said frame.

7. A desk construction in accordance with claim 6 further comprisingreinforcement rods extending across said frame.

8. A desk construction in accordance with claim 1 wherein each said legcomprises a long rodlike pipe made of iron sheet.

9. A desk construction in accordance with claim 1 wherein each said legcomprises an outer pipe of rectangular cross sec tion and an innerrectangular pipe within said outer pipe and securely attached thereto,said inner pipe projecting upwardly above the bottom plane of saidcross-shaped member and said frame for said secure attachment to saidcross-shaped member, the bottom of said cross-shaped member and the topof said outer pipe being in abutting relationship.

1. A desk construction having a top and a plurality of legs dependingdownwardly therefrom, and wherein no connecting is necessary betweenlegs, comprising: a frame member disposed beneath and supporting saidtop, said frame being smaller in periphery than said top and having acorner adjacent each leg; a cross-shaped member at each corner of saidframe defining a cross in a horizontal plane, each said cross-shapedmember defining four angles which are substantially right angles andwhich meet at a point along said horizontal plane through saidcross-shaped member, and each said corner of said frame fitting withinone of the right angles of a respectively cross-shaped member and beingsecurely attached thereto; and each said leg fitting within a rightangle of each said crossshaped member diagonally across from each cornerof said frame, each said leg being securely attached to its respectivecrossshaped member.
 2. A desk construction in accordance with claim 1further comprising a set of stack drawers mounted between said frame andone of said legs.
 3. A desk construction in accordance with claim 2further comprising a second set of stack drawers mounted between saidframe and a second one of said legs.
 4. A desk construction inaccordance with claim 1 wherein said frame is securely attached to saidcross-shaped members by means of screws; and said legs are securelyattached to said cross-shaped members by welding.
 5. A desk constructionin accordance with claim 1 wherein said top and said frame arerectangular.
 6. A desk construction in accordance with claim 1 furthercomprising reinforcing angle irons disposed within each corner of saidframe and attached thereto, so as to provide a triple thickness of angleiron, frame and cross-shaped member at each corner of said frame.
 7. Adesk construction in accordance with claim 6 further comprisingreinforcement rods extending across said frame.
 8. A desk constructionin accordance with claim 1 wherein each said leg comprises a longrodlike pipe made of iron sheet.
 9. A desk construction in accordancewith claim 1 wherein each said leg comprises an outer pipe ofrectangular cross section and an inner rectangular pipe within saidouter pipe and securely attached thereto, said inner pipe projectingupwardly above the bottom plane of said cross-shaped member and saidframe for said secure attachment to said cross-shaped member, the bottomof said cross-shaped member and the top of said outer pipe being inabutting relationship.